Home / 21,238.84-29,311.14-12,741.33

Finding the Fourth Proportional to 21,238.84, 29,311.14 and 12,741.33

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Solution

The fourth proportional to 21,238.84, 29,311.14 and 12,741.33 is: 17,583.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.84 : 29,311.14 = 12,741.33 : x
  2. Step 2: Convert to fraction form
    21,238.84/29,311.14 = 12,741.33/x
  3. Step 3: Cross multiply
    21,238.84x = 29,311.14 × 12,741.33
  4. Step 4: Simplify right side
    21,238.84x = 373,462,907.42
  5. Step 5: Solve for x
    x = 373,462,907.42/21,238.84
  6. Step 6: Final answer
    x = 17,583.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.